Method of making pneumatic-tire shoes



F W RUSSELL.

METHOD OF MAKING PNEUMATIC URE SHOES.

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aia y, fr shui j intended.v for? use :'ifc'ause Oflimited f portant to decrease all waste 11" "any excessive' friction within Tf for v'use fon self-propelled up ac'COrdingtO this 'invention of what isknown 'as f cord, fabric which is composed lof s'tronlg,"heavy` longitudinal warp cords held *.toget Y "berjceinentfwhich-.serves to hold contiguous members' or cords together in parallelism and Lvsuii'ciently firmly to permitthe manipulai tion 'ofthefabric'without their beingsepa- .'rated during the ymanipulation incidental to l the'placing -of the same on a 'form 'during the construction ofthe v, iibf; if A L .730 @ZZ whom @t may concern..-

UNITED Sv'xff-ATF-QS-- PATENT f OFFICE-gi Be ,fit1 known that I, FLYDV'. RUSSELL@ i ,citizen iofthellnited States, residing a't le. i-Akron, inythe. county `5--of,-.()hio,` have invented new and useful Imvp'roitementswin Methods'of. Making Pneu- '..:'t.-matic-Tire fShoes, `of Iwhich the following is fra-specification.- 2-

in Thisfinvention relates. to built-up pneumaticitires or'tii'e-shoes which are primarily on automobiles where bepower it is particularly imof power and the tire shoe. Tireshoes, for double-tube vehicles, l are built er by a skin coating of rubber-or rubtire-shoe, but at the same time they-maybe, if necessary, sepa- }"rated from 'each other temporarily but' 39X to the-tackyv o r when' brought into contact they reunite due "adhesive nature of the coatingfofrubber `or rubber cement.

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In`this.case, `for convenience of phrasethreads "intersect each other at rightangles and also of the tire. A ,A l eretofore, cord tires have beenconstructi manipulation or placing of asingle "tirefa'l'id. 'with the ends of each cord fastened '-4, at' the bead portions and then extended back- A ".wa'rdandforward ac rossthe tread surface E "of the ,tire to build up the fabric and each individualA cord Afastened separately to an individual fastening device and then'coatfing ytheitire `shoe with rubber or rubber ctemeiltfor the purpose of holding the cords in "positiombut as the building-up ofa tire shoe in-this manner involves a large amount of ,labor and takes an excessive lengthof time application aie-a April 4, 191e. serial No. salvas."

ofv Summit and Statev pneumatic tires 4designate the longitudinal' cornsas ,'warp cords,l as aifclear distinction '-mst be'dravvn between'a fabric sov constructed and thel ordinary woven 'fabric i ""fwhich'is 'cut-on the bias so Ithat when ap- @plied ini the tire the warp and woof .40

" at an 'angle to tlielplanel an angle to the plane of the FWD, .W- RUSSELL, ai 01110 i i ziinirnon-orliiaicnirafraarnimmrc-rimaaziona.4 l

I l l .Specification of Letters Patenti 4j Ptentd A1921..'

Y for the operatiomIjhave conceived the idea of building up a tireshoe from a fabric composed ofja plurality of cords wherein approximately the sole strength lis in a line lorigitudinal of the cords, and the object of the invention is, therefore, to provide a new and improved l method whereby tires or shoes may be made quickly and efliciently froma cord .fabric without the necessityiof special 'machinery and substantially without the "necessity ofjskilled labor with 'the .resulting product embodying all the advantages pos- I sessed or claimed to of this general type;r v

With the, foregoingand `otherobjfects in view, the invention consists in the novel con struction', combination and arrangement o; parts constituting the invention to behere inafter specifically described and illustrated in the accompanying drawingswhich form a partfhereof wherein is shown the preferred embodiment of the' invention, but it is to 'bi understood that changes, variations and modifications can-be resorted to which come within the scope o'ftlie matter-hereinafter claimed, l f j In carrying out my improved method oi making tiresI make use of certain ymechanical ins'trumentalities, a preferredform of which is shown in the accompanying drawings wherein'similar reference numerals in. dicate like ypartsin the different figures.

In the "drawings, l

Figure 1.is a perspectiueviewbf a forming core showing thereon a tire-shoe or carcass composed of lcord fabric in the process of its formation; y Y

F ig. 2, is a `transverse sectionall view of a core showing the first application of a, sheet the process forming this invention the fabric being of tubular formation and shown in section; Fig. 2 is a side elevationalview of a-tubular fabric strip being attached to a core, the same being partially broken away to show the inclosed core; n Fig.l 3', is a transverse sectionalv view ofv a core 'with 'thefabric placed thereon and embodying as an element a slight modification of the process ter of this invention-f i Fig..4, is a transverse sectional view of a core after the'first layer of cord fabric has' been applied thereto;- l l be possessed by a tire' lof cordfabric thereto-as the first stepl of which 'forms the subject matelusive with the tire-shoe or carcass formed l thereon Fig..8, is a side .elevation of the matter shown in Fig. 4; l V f Fig.y 9, is a view similar to Fig. 8 of the matter shown in Fig. 5; and,

Figs. lO and 11 are side elevational views of the construction shown in Figs. 6 and 7 respectively.

Referring to the drawings in'detail the reference numeral 1 denotes the ordinary usually made heavier,

. not dry out.

.core or mandrel havingy the exterior shape which it is desired to impart to the'interior of theshoe or. tire to be formed thereon.

core for .thebuildingnp of tire shoes is usually supported upon suitable mechanism to permit of its revolution in a' vertical plane, but the mechanism for supporting the core forms no part of this invention and therefore is not shown.

In practice,` the core is usually*A firstcoa'ted with a tacky or adhesive solution of rubber.

to cause the layers of the tubular fabric which are to'be superposedyth'ereon to stick in' place and hold their shape -and arrange` ment during the construction of the, shoeor tire. The fabric employed consists 0f a sheet formed of -longitudinally-extending, par allel, coadjacent and 'adhering warp cords 3 thicker and stronger than the threads ordinarily employed in what is known as thread fabric. These cords are united into a sheet and held in sheeted relationwiththe cords 'extendingin par' allelism and held together by means of a substantially transparent solution ofl rubber so that when adjacent cords are contact they adhere and may `beseparated at any time and brought into'contact again andwill be retained in substantially any position so long as the rubber solution does 2 of tubular formation ispref# diameter and .length shoe and in practice The sheet erably .of sufficient to form the entire tire one end thereof is so fashioned as to be capable of application to one lateral' face 5 of the core las clearly shown by section vin Fig. 2 with the Warp threads VWhere they are applied tothe core arranged to the plane of the tire.

at l an ang e of 45 As is illustratedwtheend of the tubular workedinwardly on the core l, and

Stripis.

The sheet 2 is apsmoothed as desired.l

vplied to the entire outer curved surface ofl the core and carried down to'a liney indicated by thev reference numeral 6 as sh own in Figs. 4 'and 8 and this application of the fabric brought into are laid .at right angles vthe cords of all of the thereof lthe tubular strip back on itself over' the cords of the first layer A With the cords 7 of the second layer extending at approximately right angles to the cords of the first layer A. This'forms the second layer B of the tire carcass. This second layer B is, of course, carried over the entire surface of the first layer A 'down to the line lindicated by the reference numeral 8 and when properly smoothed in place a bead-forming core 9 is applied to the lateral face ofthe second layer B near the inner termination of this layer, as shown infFig. 5. The bead core 9 is held in place by the adhesive-nature of the rubber solution Yemployed and the balance of the stripv 2 is again turned inside out, Ior reversed, and thenfolded over the core 9` as shown in Fig. 6 and the balance of the strip islaid over the second layer B mately right angles with4 respect vto the cords of the second layer B and at an angle approximately 45 with respect .to the plane of the tire. Afterward, Figs. 6 and-10) is applied. to the lateral face of the layer C'adjacent to the line 6 and caused toadhere thereto by Vthesticky nature of the rubber solution employed. The balance .of the tubular strip of fabric is again reversed and then carried over the bead core 11 andaround .the layerC and positioned with the cords thereof 4arranged at approximately right angles tothe cords of the layer .C and at angles approximating 45 with respect to the pla-ne of the'tire, thus forming the last and outer layer D. The la er D is carried down andaround the layer t on the beadl core A to the inner ed `e of the carcass andany,surplus is usual y trimmed off. The warp .threads of' eac i layer are positioned at angles approximating 45 to the plane of theti-re, and when folded back on the next preceding layer they thereto and all of layers are arranged `at anglesf'alpproxlmating 45 to the planeof the tireso that ivhen the'tire shoe is built up it consists of four layers of cords, the cords of each layer arranged at approximately right angles tothe cords of co'adjacentlayers and all of the cords at an angle approximating 45with 'respectto the'plane of the tire. Furthermore, it will be noted that by. bringing the, layers of cord fabricV down to the lines indicated by the reference numerals 6 and S on the core and then applying the bead cores 9 and 11, the strips of cord fabric are carried aroundthese beads and from thence extend outwardly and over the tread portion of the finished carcass, therea bead core 11.-((see layer A and fold th @over this ring-shaped member approximately right l bysecurely anchoring thebead core in posltion and forming `perfect beads. Afterward an ordinary covering or tread of rubber is applied tothe structure in the ordinary manner and the entire carcass is vulcanized -as usual.

In Fig 34 is Ishown a slight modification of the process illustrated in the remaining figures. In this ligure is shown the ordi* nary 2 is applied as shown in Figs. 4 and 8 but before foldiner back the fabric to form the fecond layer 1 apply a ring l5 formed of Wire of cable or any other strengthfgiving instrumentality tothe lateral face of the e remainder of the strip 16 so that when the shoe is completed the bead on one side will have a bead core and also a ring or hook around which the fold is made between the layers A and B.-

claim:-l l. That improvement in methods of mako'uter face of a' forming-core, said fabric Aconsisting of a. plurality of strength-giving cords arranged in parallelism and of sufficient diameter and length to ,make the complete structure of a tire carcass, with the Warp threads of the inner layer extending diagonally with respect to the plane of the Core, folding the entire sheet of fabric back on itself and over the first layer to form the second layer with the fold line near one inner edge of the structure and with the cords of the second layer arranged at angles to the cords of l'erfirstlayer, applying a bead core to the er face'A of said second layer, folding the brio around said bead core and over said cond layer With the cords thereof disposed 'ight angles to the eords of the second er t'ovftfrm a third laver. annlving a bead core l over which the layer of fabric side to side across core to the outer face of said third layer and 4on the opposite side of saidstructure from the first bead core and finally folding said fabric around both bead cores and over the third layer the cords thereof being disposed at right angles tothe cords of the third layer.

'2. That improvement in methods of making a structure for incorporation in a tireshoe which vconsists in folding a single unitary tubular she ing of a plurality of strength-giving cords extending in parallelism, said sheet being of sulicient diameter entirely to encompass the structure and form a complete layer of the structure to be built during each foldingT operation, folding said sheet laterally from a formin r core to thereby provide repeat dt layers of said fabric with the fold lines said sheet disposed near the inner edges of 1tbaid forming core and with the strength-gil,i` in t cords of alternate layers arranged at iight: angles with respect to each Aother and oblique to the longitudinal line of the structure. ,i o

3. rlhat improvement in methods of making a structure for incorporation in a tire*v shoe which consists in folding a single unitary sheet of tubular textiley fabric composed of parallel strength-giving cords, said sheet beingr of width sufficient to form at one fold ing operation a complete envelop or layer for the structure, folding said sheet reversely back and forth over a core to forni repeated layers ofstre11gtl1-givi11g material with the fold lines of each sheet disposed near the inner edges of said forming eore with the strengthsgiving cords of alternate layers dis` posed at approximately right angles to each otherand all of said cords at an angle with respect to the longitudinal .line of the structure. i

ln testimonyY whereof l have hereunto set my hand.. l. FLUYD lili. RUSSELL.

et of textile fabric, consist sal 

